Gkegoe teinksj op new yoek



or round of ,thefront of the book.

NITED TAT-ES' State ofNew York, `have invented-a new and useful Machine'for Outtingthe Eronts ofBooks in the-Round; and we hereby'declare that the following is a full and correct description thereof, reference being had to the drawings annexed, `making apart of this specification, and to 'the letters of reference thereon.

in the round,`as it is termed by bookbinders, has heretofore .beenperfcrined by handtoolspl Our said'inventionconsists, chieiiy, incom Lbining `together in` an "organized machine a press suitable for holding a book and presenting the front edge of `the same lto be cut 'and finished with a rocking knife, or knife turning on its. axis, ther cutting-edge and `polishingsurface of which produces the finished concave IIn order toymake'a smooth out, we give the `rocking knifefan en dwisemotion by any suitable mechanical device, so' thatit cutswith a 'drawing cut.

" The backof the knife is smoothly `finished `andpolishjed and thesurface made to conform `to flie'concave of the front edge `of/the book, so thatas it follows y the track of theknife-edge it not only prevents the knife-edge from feeding :into

motion 4against the front edgesv of the leaves f `sinoothes and polishes them in the round, thus g preparing themin` a highly -inishd statefor gilding@Y i i i y. The knives may bemade of different radins from theaxisf tothe cutting-edgefor differents-ized books, or ,for different degrees of curvatn`-"e in :therouud of books of' any particular t f size. The round may` he cnt in each book at one operation, pr b'y dividing "the book, one# i lhalf of the ronnd can be cut and polished atga time by a` singlestroke of the knife.i This 1 inode of `operation gives 'opportunity to vary Ithe curve ofthe round with any given cutter lback or front of the press-bed, so as to vary it the city and county of New York, in the State cityA of Brooklyn, inthe county of Kings and `The operationofcutting the fronts of booksV thebook, but by t'he pressure and from a true are of a circle to a combination of two arcs of a` circle by raising or lowering the Garcon. stinks," or NEW lYORK', AND 'LouisHnrrkAMeor BROOKLYN, New YORK.

l MACHiNE Fon` CUTTING Books iN THE ROUND.'

A "Specification 'forming part of Leiters Patent No'. 35,639,Adafcd June 1.7, 186,2.

"from a horizontal plane or a plane at right angles from the verticalplane of the axis of the cutting-kni fe. We prefer this mode of opera tion for varying the curve of the round to any way of varying it by giving the edge of the knife an eccentric motion from its axis, as the latterwould interfere with the polishingcapacity of the back of the knife. The edge of the knife is sharpened from the under side,so that the polishing-surface ofthe curved blade and back of the knife follows in the track of the cut.v The edge of the knife, after having passed through the leaves of the book in-cuttingthe round, convies against 'a cutting-board placed on the press-hed under'the book and projecting a little in front of the book, for the knife to cut on in order tomake a clean cut of lthe last leaf.`

More particularly'to describe our said inf vention, we refer to the annexed drawings, of 'which- Figurel is avertical longitudinal sectionof the machine, showingthe position of the book,

`kni`fe, and press; Fig. 2, a rear'elevation of the inachine; Fig. 3, a plan View; Fig. 4, a detachedsection of part of the press-bed, cutting-board, knife, and knife-stock, with bookopened in the middle for the purpose of cutting half of the round at each stroke of the knife. Letter a c c, parallel with each other, and inclosing-a horizontal bed, d. Amt the front end of the machineafiauge, e, is turned up from the bed d, in which are placed the two gagescrew-s 1 f, which regulate the position of the book-press and bookrelatively to the knife -edge when brought up to the knife to be cut.

Letter gis a horizontal'knife-stock, which turns freely in bearings h h in the side flanges, c c, of the :nain bed of the machine, the bearings being carefully and accurately placed, so that the axis of the knife-stockshall be at right angles with the inside opposite surfaces of the fianges c c, and the horizontalplane of the axis parallel with the top side ofthe main bed d. Letter '13 represents a cutting-knife secured to the cutterstock by screws j. The knife is sharpened from the under side, k. The outer represents the frame ofthe main i `body of the machine mounted on legs b. At

the sides of the frame are two sides or flanges, 'f

surface, Z, of the'knife-blade is convex, being a section of the periphery o: a cylinder and concentric with the axis of the knife. This convex surface is highly polished, for the purpose of smoothing or polishing the front edge of the book in the round as it follows the knifeedge and is drawn back to its starting-point.

Letter m is a hand-lever fast to the knifestock, by which it isvoperated. `The knifestock has an endwise motion as Well as a rocking motion, the endwisc motion being communicated by a screw, n, cut in the shaft and bea-ring of the cutter-stock next to the hand-lever.

For convenience the book-press is made movable in a direction toward and from the cutter-stock.

Letter o represents the bed of the bookpress; p, the cutting-board; q, the platen; r, screw; s s, posts; 't, cross-head; if, lever, and 'u handle to lever for turning the screw.

Letters w ww w are adjusting-screws placed in the press-bed for the purpose of regulating the level of the bed andthe position of the middle of the book, which latter should be in the horizontal plane of tlie axis of the cuttingknife. The adj listing-screws may project upward frointhe lower bed, or they may be dispensed with and'paeking substituted.

In the operation of the. machine the book should be placed in the press, substantially as shown in Fig. l, so as to beelamped as close to the front edge as practicable to admit of Working the knife. The cutting-board should project beyond the edge of the book.

There is a guide, x, on the press-bed, against whichone end of the book is placed, so as to insure the round being cut at rightangles with the ends of the book. The side llanges,oc`c, of themain bed serve as guides for the backward and forward motion of the press-bed, the side edges of the press-bedbeing planed up to dit the inside opposite parallel sides of the flanges c c.

The book-press having been draw-n back from the knife and the book properly'elampcd therein, is pushed forward toward the knifestock`(the cutting-edge of the knife being thrown back ont of the way) until the front, edge ofthe press-bed comes against the gagescrews f f, whieharrest the further progress which-we have described and shown herein,

and which we prefer to use, and placing thev cut have been, used for various purposes, in p `combination with-clamps or presses for holding the material acted on by the cutter-such asv tobacco-cutting machines, planing-machines,

&c.; butin those cases the4 material was fed regularly up. to the knife, to be cut away by constantly-repeated strokes of theknife during continuons rotation; but, nevertheless, we do not claim any combination of cutting-knife moving in a curve with any press for holding and presenting material to the action of the knife,except the knife and press be constructed and organized so as to worktogethersubstantially as we have described, for the purpose of cutting the fronts of books in the round.

We claim as our inventionl. A machine for cutting the fronts of books in the round, consisting of a rocking knife suitable for cutting the round or concave of the front edge of the book, in combination with a press suitable for holding the book and presenting it to the action of the knife, substantiallyas described.

2. In combination with a press suitable for holding the book, a convex polishing device, substantially as described, for the purpose of polishing the fronts of books in the round, as set forth.

f 3. In combination with a press suitable for holding a book and presenting the front edge to be cut, a knife-edge moving in the desired curve of the round, having` combined with ita polishing-surface, snbsta-ntiallyas described.

4. In combination with a press suitable for holding and presenting the front edge of the book to be eut, the endwise motion ofthe knife and polishing device, whether combinedv together or separate from each other, as described, when constructed and arranged to move in the curve necessary to cut and finish the front.of'the book. in the round, substantially as described.

5. In combination with a press suitable for holding the book, a knife the cutting-edge of which travels in the dcsiredcurve of the round, substantially as described.

6. In combination with aprcss suitable for holding a book and presenting it to be cnt, and a knife having a cutting-edge moving in the desired curve of the round, acutting-board ory other suitable surface for the knifeto cnt against, snbstantiall y as described.

GREGOR TRINKS.

. LOUIS HEITKAMI.

Witnesses:

R.l J. CUNNINGHAM, INC. TREADWELL, J u nr. 

